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Finding the Fourth Proportional to 441.69, 609.56 and 255.18

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Solution

The fourth proportional to 441.69, 609.56 and 255.18 is: 352.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.69 : 609.56 = 255.18 : x
  2. Step 2: Convert to fraction form
    441.69/609.56 = 255.18/x
  3. Step 3: Cross multiply
    441.69x = 609.56 × 255.18
  4. Step 4: Simplify right side
    441.69x = 155,547.52
  5. Step 5: Solve for x
    x = 155,547.52/441.69
  6. Step 6: Final answer
    x = 352.16

Related Problems

Find fourth proportional to 220.85, 304.78 and 127.59
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.